Experimental Investigation on the Detonation Cellular Structure Caused by C5~C6 Cloud Fuel Mixtures

The detonation cellular structures caused by C5~C6 cloud fuel mixtures are studied under the initial atmospheric pressure and room temperature by improved soot foil technique. Sharp cellular patterns are obtained. Meanwhile, the effect of equivalence ratio and initiation energy on the detonation cell size are also discussed respectively. The experimental results show that the detonation cell size of C5~C6 increases almost linearly with the increase of the equivalence ratio, but the detonation cell size increases first then decreases with the increase of the initiation energy. Moreover, when the initiation energy gets high enough, the fine structures in cellular structures are observed.